git.txt: correct where --work-tree path is relative to
[git/git.git] / setup.c
CommitLineData
d288a700 1#include "cache.h"
e90fdc39
JS
2#include "dir.h"
3
4static int inside_git_dir = -1;
5static int inside_work_tree = -1;
d288a700 6
d089ebaa
JH
7const char *prefix_path(const char *prefix, int len, const char *path)
8{
9 const char *orig = path;
10 char *sanitized = xmalloc(len + strlen(path) + 1);
9a13ba1b 11 if (is_absolute_path(orig))
d089ebaa
JH
12 strcpy(sanitized, path);
13 else {
14 if (len)
15 memcpy(sanitized, prefix, len);
16 strcpy(sanitized + len, path);
f332726e 17 }
f3cad0ad 18 if (normalize_path_copy(sanitized, sanitized))
d089ebaa 19 goto error_out;
9a13ba1b 20 if (is_absolute_path(orig)) {
72ec8ba6 21 size_t root_len, len, total;
d089ebaa 22 const char *work_tree = get_git_work_tree();
b3100fd5
JH
23 if (!work_tree)
24 goto error_out;
25 len = strlen(work_tree);
72ec8ba6 26 root_len = offset_1st_component(work_tree);
b3100fd5 27 total = strlen(sanitized) + 1;
d089ebaa 28 if (strncmp(sanitized, work_tree, len) ||
72ec8ba6 29 (len > root_len && sanitized[len] != '\0' && sanitized[len] != '/')) {
d089ebaa 30 error_out:
62525ef7 31 die("'%s' is outside repository", orig);
d089ebaa
JH
32 }
33 if (sanitized[len] == '/')
34 len++;
35 memmove(sanitized, sanitized + len, total - len);
36 }
37 return sanitized;
f332726e
LT
38}
39
a6080a0a 40/*
4ca06608
JH
41 * Unlike prefix_path, this should be used if the named file does
42 * not have to interact with index entry; i.e. name of a random file
43 * on the filesystem.
44 */
45const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
46{
47 static char path[PATH_MAX];
71064e3f 48#ifndef WIN32
ecf4831d 49 if (!pfx || !*pfx || is_absolute_path(arg))
4ca06608
JH
50 return arg;
51 memcpy(path, pfx, pfx_len);
52 strcpy(path + pfx_len, arg);
25fe217b
JS
53#else
54 char *p;
55 /* don't add prefix to absolute paths, but still replace '\' by '/' */
56 if (is_absolute_path(arg))
57 pfx_len = 0;
58 else
59 memcpy(path, pfx, pfx_len);
60 strcpy(path + pfx_len, arg);
61 for (p = path + pfx_len; *p; p++)
62 if (*p == '\\')
63 *p = '/';
64#endif
4ca06608
JH
65 return path;
66}
67
c6e8c800
JH
68int check_filename(const char *prefix, const char *arg)
69{
70 const char *name;
71 struct stat st;
72
73 name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
74 if (!lstat(name, &st))
75 return 1; /* file exists */
76 if (errno == ENOENT || errno == ENOTDIR)
77 return 0; /* file does not exist */
78 die_errno("failed to stat '%s'", arg);
79}
80
009fee47
MM
81static void NORETURN die_verify_filename(const char *prefix, const char *arg)
82{
83 unsigned char sha1[20];
84 unsigned mode;
85 /* try a detailed diagnostic ... */
86 get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix);
87 /* ... or fall back the most general message. */
88 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
89 "Use '--' to separate paths from revisions", arg);
90
91}
92
e23d0b4a
LT
93/*
94 * Verify a filename that we got as an argument for a pathspec
95 * entry. Note that a filename that begins with "-" never verifies
96 * as true, because even if such a filename were to exist, we want
97 * it to be preceded by the "--" marker (or we want the user to
98 * use a format like "./-filename")
99 */
100void verify_filename(const char *prefix, const char *arg)
101{
e23d0b4a
LT
102 if (*arg == '-')
103 die("bad flag '%s' used after filename", arg);
c6e8c800 104 if (check_filename(prefix, arg))
e23d0b4a 105 return;
009fee47 106 die_verify_filename(prefix, arg);
e23d0b4a
LT
107}
108
ea92f41f
JH
109/*
110 * Opposite of the above: the command line did not have -- marker
111 * and we parsed the arg as a refname. It should not be interpretable
112 * as a filename.
113 */
114void verify_non_filename(const char *prefix, const char *arg)
115{
7ae3df8c 116 if (!is_inside_work_tree() || is_inside_git_dir())
68025633 117 return;
ea92f41f
JH
118 if (*arg == '-')
119 return; /* flag */
c6e8c800
JH
120 if (!check_filename(prefix, arg))
121 return;
122 die("ambiguous argument '%s': both revision and filename\n"
123 "Use '--' to separate filenames from revisions", arg);
ea92f41f
JH
124}
125
6b5ee137 126const char **get_pathspec(const char *prefix, const char **pathspec)
d288a700 127{
6b5ee137 128 const char *entry = *pathspec;
d089ebaa 129 const char **src, **dst;
d288a700
LT
130 int prefixlen;
131
f332726e
LT
132 if (!prefix && !entry)
133 return NULL;
d288a700
LT
134
135 if (!entry) {
136 static const char *spec[2];
137 spec[0] = prefix;
138 spec[1] = NULL;
139 return spec;
140 }
141
142 /* Otherwise we have to re-write the entries.. */
d089ebaa
JH
143 src = pathspec;
144 dst = pathspec;
f332726e 145 prefixlen = prefix ? strlen(prefix) : 0;
d089ebaa
JH
146 while (*src) {
147 const char *p = prefix_path(prefix, prefixlen, *src);
62525ef7 148 *(dst++) = p;
d089ebaa
JH
149 src++;
150 }
151 *dst = NULL;
152 if (!*pathspec)
153 return NULL;
154 return pathspec;
d288a700
LT
155}
156
5f5608bc 157/*
ad1a382f 158 * Test if it looks like we're at a git directory.
5e7bfe25 159 * We want to see:
5f5608bc 160 *
790296fd 161 * - either an objects/ directory _or_ the proper
5f5608bc 162 * GIT_OBJECT_DIRECTORY environment variable
ad1a382f 163 * - a refs/ directory
8098a178 164 * - either a HEAD symlink or a HEAD file that is formatted as
c847f537
JH
165 * a proper "ref:", or a regular file HEAD that has a properly
166 * formatted sha1 object name.
5f5608bc 167 */
ad1a382f 168static int is_git_directory(const char *suspect)
5f5608bc 169{
ad1a382f
SP
170 char path[PATH_MAX];
171 size_t len = strlen(suspect);
172
3c9d0414
GB
173 if (PATH_MAX <= len + strlen("/objects"))
174 die("Too long path: %.*s", 60, suspect);
ad1a382f
SP
175 strcpy(path, suspect);
176 if (getenv(DB_ENVIRONMENT)) {
177 if (access(getenv(DB_ENVIRONMENT), X_OK))
178 return 0;
179 }
180 else {
181 strcpy(path + len, "/objects");
182 if (access(path, X_OK))
183 return 0;
184 }
185
186 strcpy(path + len, "/refs");
187 if (access(path, X_OK))
8098a178 188 return 0;
ad1a382f
SP
189
190 strcpy(path + len, "/HEAD");
c847f537 191 if (validate_headref(path))
ad1a382f
SP
192 return 0;
193
8098a178 194 return 1;
5f5608bc
LT
195}
196
68025633
JS
197int is_inside_git_dir(void)
198{
e90fdc39
JS
199 if (inside_git_dir < 0)
200 inside_git_dir = is_inside_dir(get_git_dir());
201 return inside_git_dir;
892c41b9
ML
202}
203
892c41b9
ML
204int is_inside_work_tree(void)
205{
e90fdc39
JS
206 if (inside_work_tree < 0)
207 inside_work_tree = is_inside_dir(get_git_work_tree());
208 return inside_work_tree;
892c41b9
ML
209}
210
f3fa1838
JH
211void setup_work_tree(void)
212{
354e6534
JS
213 const char *work_tree, *git_dir;
214 static int initialized = 0;
215
216 if (initialized)
217 return;
218 work_tree = get_git_work_tree();
219 git_dir = get_git_dir();
59f0f2f3 220 if (!is_absolute_path(git_dir))
044bbbcb 221 git_dir = make_absolute_path(git_dir);
59f0f2f3
MH
222 if (!work_tree || chdir(work_tree))
223 die("This operation must be run in a work tree");
044bbbcb 224 set_git_dir(make_relative_path(git_dir, work_tree));
354e6534 225 initialized = 1;
59f0f2f3
MH
226}
227
337e51ce 228static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
9459aa77 229{
337e51ce
NTND
230 char repo_config[PATH_MAX+1];
231
232 /*
233 * git_config() can't be used here because it calls git_pathdup()
234 * to get $GIT_CONFIG/config. That call will make setup_git_env()
235 * set git_dir to ".git".
236 *
237 * We are in gitdir setup, no git dir has been found useable yet.
238 * Use a gentler version of git_config() to check if this repo
239 * is a good one.
240 */
241 snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
242 git_config_early(check_repository_format_version, NULL, repo_config);
9459aa77
NTND
243 if (GIT_REPO_VERSION < repository_format_version) {
244 if (!nongit_ok)
245 die ("Expected git repo version <= %d, found %d",
246 GIT_REPO_VERSION, repository_format_version);
247 warning("Expected git repo version <= %d, found %d",
248 GIT_REPO_VERSION, repository_format_version);
249 warning("Please upgrade Git");
250 *nongit_ok = -1;
251 return -1;
252 }
253 return 0;
254}
255
b44ebb19
LH
256/*
257 * Try to read the location of the git directory from the .git file,
258 * return path to git directory if found.
259 */
260const char *read_gitfile_gently(const char *path)
261{
262 char *buf;
40c813e0
BK
263 char *dir;
264 const char *slash;
b44ebb19
LH
265 struct stat st;
266 int fd;
267 size_t len;
268
269 if (stat(path, &st))
270 return NULL;
271 if (!S_ISREG(st.st_mode))
272 return NULL;
273 fd = open(path, O_RDONLY);
274 if (fd < 0)
d824cbba 275 die_errno("Error opening '%s'", path);
b44ebb19
LH
276 buf = xmalloc(st.st_size + 1);
277 len = read_in_full(fd, buf, st.st_size);
278 close(fd);
279 if (len != st.st_size)
280 die("Error reading %s", path);
281 buf[len] = '\0';
282 if (prefixcmp(buf, "gitdir: "))
283 die("Invalid gitfile format: %s", path);
284 while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
285 len--;
286 if (len < 9)
287 die("No path in gitfile: %s", path);
288 buf[len] = '\0';
40c813e0
BK
289 dir = buf + 8;
290
291 if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
292 size_t pathlen = slash+1 - path;
293 size_t dirlen = pathlen + len - 8;
294 dir = xmalloc(dirlen + 1);
295 strncpy(dir, path, pathlen);
296 strncpy(dir + pathlen, buf + 8, len - 8);
297 dir[dirlen] = '\0';
298 free(buf);
299 buf = dir;
300 }
301
302 if (!is_git_directory(dir))
303 die("Not a git repository: %s", dir);
304 path = make_absolute_path(dir);
305
b44ebb19
LH
306 free(buf);
307 return path;
308}
309
e4e30347 310static const char *setup_explicit_git_dir(const char *gitdirenv,
b3f66fd3
NTND
311 char *cwd, int len,
312 int *nongit_ok)
e4e30347 313{
b3f66fd3
NTND
314 const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
315 const char *worktree;
316 char *gitfile;
e4e30347
JN
317
318 if (PATH_MAX - 40 < strlen(gitdirenv))
319 die("'$%s' too big", GIT_DIR_ENVIRONMENT);
b3f66fd3
NTND
320
321 gitfile = (char*)read_gitfile_gently(gitdirenv);
322 if (gitfile) {
323 gitfile = xstrdup(gitfile);
324 gitdirenv = gitfile;
325 }
326
e4e30347
JN
327 if (!is_git_directory(gitdirenv)) {
328 if (nongit_ok) {
329 *nongit_ok = 1;
b3f66fd3 330 free(gitfile);
e4e30347
JN
331 return NULL;
332 }
333 die("Not a git repository: '%s'", gitdirenv);
334 }
b3f66fd3
NTND
335
336 if (check_repository_format_gently(gitdirenv, nongit_ok)) {
337 free(gitfile);
338 return NULL;
e4e30347 339 }
b3f66fd3
NTND
340
341 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
342 if (work_tree_env)
343 set_git_work_tree(work_tree_env);
344 else if (is_bare_repository_cfg > 0) {
345 if (git_work_tree_cfg) /* #22.2, #30 */
346 die("core.bare and core.worktree do not make sense");
347
348 /* #18, #26 */
349 set_git_dir(gitdirenv);
350 free(gitfile);
e4e30347 351 return NULL;
b3f66fd3
NTND
352 }
353 else if (git_work_tree_cfg) { /* #6, #14 */
354 if (is_absolute_path(git_work_tree_cfg))
355 set_git_work_tree(git_work_tree_cfg);
356 else {
357 char core_worktree[PATH_MAX];
358 if (chdir(gitdirenv))
359 die_errno("Could not chdir to '%s'", gitdirenv);
360 if (chdir(git_work_tree_cfg))
361 die_errno("Could not chdir to '%s'", git_work_tree_cfg);
362 if (!getcwd(core_worktree, PATH_MAX))
363 die_errno("Could not get directory '%s'", git_work_tree_cfg);
364 if (chdir(cwd))
365 die_errno("Could not come back to cwd");
366 set_git_work_tree(core_worktree);
367 }
368 }
369 else /* #2, #10 */
370 set_git_work_tree(".");
371
372 /* set_git_work_tree() must have been called by now */
373 worktree = get_git_work_tree();
374
375 /* both get_git_work_tree() and cwd are already normalized */
376 if (!strcmp(cwd, worktree)) { /* cwd == worktree */
377 set_git_dir(gitdirenv);
378 free(gitfile);
e4e30347 379 return NULL;
b3f66fd3
NTND
380 }
381
382 if (!prefixcmp(cwd, worktree) &&
383 cwd[strlen(worktree)] == '/') { /* cwd inside worktree */
384 set_git_dir(make_absolute_path(gitdirenv));
385 if (chdir(worktree))
386 die_errno("Could not chdir to '%s'", worktree);
387 cwd[len++] = '/';
388 cwd[len] = '\0';
389 free(gitfile);
390 return cwd + strlen(worktree) + 1;
391 }
392
393 /* cwd outside worktree */
394 set_git_dir(gitdirenv);
395 free(gitfile);
396 return NULL;
e4e30347
JN
397}
398
9951d3b3
NTND
399static const char *setup_discovered_git_dir(const char *gitdir,
400 char *cwd, int offset, int len,
401 int *nongit_ok)
93a00542 402{
9951d3b3
NTND
403 if (check_repository_format_gently(gitdir, nongit_ok))
404 return NULL;
93a00542 405
9951d3b3
NTND
406 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
407 if (is_bare_repository_cfg > 0) {
408 set_git_dir(offset == len ? gitdir : make_absolute_path(gitdir));
409 if (chdir(cwd))
410 die_errno("Could not come back to cwd");
411 return NULL;
412 }
98937bef 413
9951d3b3
NTND
414 /* #0, #1, #5, #8, #9, #12, #13 */
415 set_git_work_tree(".");
416 if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
417 set_git_dir(gitdir);
98937bef 418 inside_git_dir = 0;
9951d3b3 419 inside_work_tree = 1;
98937bef
NTND
420 if (offset == len)
421 return NULL;
422
423 /* Make "offset" point to past the '/', and add a '/' at the end */
424 offset++;
425 cwd[len++] = '/';
426 cwd[len] = 0;
427 return cwd + offset;
428}
429
1cd8031b
NTND
430/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
431static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
68698da5
JN
432{
433 int root_len;
434
1cd8031b
NTND
435 if (check_repository_format_gently(".", nongit_ok))
436 return NULL;
437
68698da5 438 inside_git_dir = 1;
1cd8031b 439 inside_work_tree = 0;
68698da5 440 if (offset != len) {
8fc0ae80
NTND
441 if (chdir(cwd))
442 die_errno("Cannot come back to cwd");
68698da5
JN
443 root_len = offset_1st_component(cwd);
444 cwd[offset > root_len ? offset : root_len] = '\0';
445 set_git_dir(cwd);
337e51ce 446 }
1cd8031b 447 else
68698da5 448 set_git_dir(".");
68698da5
JN
449 return NULL;
450}
451
f161edeb
JN
452static const char *setup_nongit(const char *cwd, int *nongit_ok)
453{
454 if (!nongit_ok)
455 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
456 if (chdir(cwd))
457 die_errno("Cannot come back to cwd");
458 *nongit_ok = 1;
459 return NULL;
460}
461
60c98d1e
JN
462static dev_t get_device_or_die(const char *path, const char *prefix)
463{
464 struct stat buf;
465 if (stat(path, &buf))
466 die_errno("failed to stat '%s%s%s'",
467 prefix ? prefix : "",
468 prefix ? "/" : "", path);
469 return buf.st_dev;
470}
471
e90fdc39
JS
472/*
473 * We cannot decide in this function whether we are in the work tree or
474 * not, since the config can only be read _after_ this function was called.
475 */
a60645f9 476static const char *setup_git_directory_gently_1(int *nongit_ok)
d288a700 477{
0454dd93 478 const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
d288a700 479 static char cwd[PATH_MAX+1];
9951d3b3
NTND
480 const char *gitdirenv, *ret;
481 char *gitfile;
98937bef 482 int len, offset, ceil_offset;
c7d1d1b1
RH
483 dev_t current_device = 0;
484 int one_filesystem = 1;
d288a700 485
af05d679
SG
486 /*
487 * Let's assume that we are in a git repository.
488 * If it turns out later that we are somewhere else, the value will be
489 * updated accordingly.
490 */
491 if (nongit_ok)
492 *nongit_ok = 0;
493
b3f66fd3
NTND
494 if (!getcwd(cwd, sizeof(cwd)-1))
495 die_errno("Unable to read current working directory");
496 offset = len = strlen(cwd);
497
e90fdc39
JS
498 /*
499 * If GIT_DIR is set explicitly, we're not going
500 * to do any discovery, but we still do repository
501 * validation.
502 */
ad1a382f 503 gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
e4e30347 504 if (gitdirenv)
b3f66fd3 505 return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
d288a700 506
0454dd93 507 ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
17d778e7
JH
508 if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
509 ceil_offset = 1;
d288a700 510
892c41b9 511 /*
e90fdc39 512 * Test in the following order (relative to the cwd):
b44ebb19 513 * - .git (file containing "gitdir: <path>")
e90fdc39
JS
514 * - .git/
515 * - ./ (bare)
b44ebb19 516 * - ../.git
e90fdc39
JS
517 * - ../.git/
518 * - ../ (bare)
519 * - ../../.git/
520 * etc.
892c41b9 521 */
cf87463e 522 one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
60c98d1e
JN
523 if (one_filesystem)
524 current_device = get_device_or_die(".", NULL);
e90fdc39 525 for (;;) {
9951d3b3
NTND
526 gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
527 if (gitfile)
528 gitdirenv = gitfile = xstrdup(gitfile);
529 else {
530 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
531 gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
532 }
533
534 if (gitdirenv) {
535 ret = setup_discovered_git_dir(gitdirenv,
536 cwd, offset, len,
537 nongit_ok);
538 free(gitfile);
539 return ret;
540 }
541 free(gitfile);
542
68698da5 543 if (is_git_directory("."))
1cd8031b
NTND
544 return setup_bare_git_dir(cwd, offset, len, nongit_ok);
545
0454dd93 546 while (--offset > ceil_offset && cwd[offset] != '/');
f161edeb
JN
547 if (offset <= ceil_offset)
548 return setup_nongit(cwd, nongit_ok);
8030e442 549 if (one_filesystem) {
60c98d1e
JN
550 dev_t parent_device = get_device_or_die("..", cwd);
551 if (parent_device != current_device) {
8030e442
LD
552 if (nongit_ok) {
553 if (chdir(cwd))
554 die_errno("Cannot come back to cwd");
555 *nongit_ok = 1;
556 return NULL;
557 }
558 cwd[offset] = '\0';
559 die("Not a git repository (or any parent up to mount parent %s)\n"
cf87463e 560 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
8030e442
LD
561 }
562 }
502ffe34
LD
563 if (chdir("..")) {
564 cwd[offset] = '\0';
d824cbba 565 die_errno("Cannot change to '%s/..'", cwd);
502ffe34 566 }
892c41b9 567 }
d288a700 568}
5e7bfe25 569
a60645f9
NTND
570const char *setup_git_directory_gently(int *nongit_ok)
571{
572 const char *prefix;
573
574 prefix = setup_git_directory_gently_1(nongit_ok);
575 if (startup_info)
576 startup_info->have_repository = !nongit_ok || !*nongit_ok;
577 return prefix;
578}
579
94df2506
JH
580int git_config_perm(const char *var, const char *value)
581{
06cbe855
HO
582 int i;
583 char *endptr;
584
585 if (value == NULL)
586 return PERM_GROUP;
587
588 if (!strcmp(value, "umask"))
589 return PERM_UMASK;
590 if (!strcmp(value, "group"))
591 return PERM_GROUP;
592 if (!strcmp(value, "all") ||
593 !strcmp(value, "world") ||
594 !strcmp(value, "everybody"))
595 return PERM_EVERYBODY;
596
597 /* Parse octal numbers */
598 i = strtol(value, &endptr, 8);
599
600 /* If not an octal number, maybe true/false? */
601 if (*endptr != 0)
602 return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
603
604 /*
605 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
5a688fe4 606 * a chmod value to restrict to.
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607 */
608 switch (i) {
609 case PERM_UMASK: /* 0 */
610 return PERM_UMASK;
611 case OLD_PERM_GROUP: /* 1 */
612 return PERM_GROUP;
613 case OLD_PERM_EVERYBODY: /* 2 */
614 return PERM_EVERYBODY;
94df2506 615 }
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616
617 /* A filemode value was given: 0xxx */
618
619 if ((i & 0600) != 0600)
620 die("Problem with core.sharedRepository filemode value "
621 "(0%.3o).\nThe owner of files must always have "
622 "read and write permissions.", i);
623
624 /*
625 * Mask filemode value. Others can not get write permission.
626 * x flags for directories are handled separately.
627 */
5a688fe4 628 return -(i & 0666);
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629}
630
ef90d6d4 631int check_repository_format_version(const char *var, const char *value, void *cb)
ab9cb76f 632{
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633 if (strcmp(var, "core.repositoryformatversion") == 0)
634 repository_format_version = git_config_int(var, value);
457f06d6 635 else if (strcmp(var, "core.sharedrepository") == 0)
94df2506 636 shared_repository = git_config_perm(var, value);
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637 else if (strcmp(var, "core.bare") == 0) {
638 is_bare_repository_cfg = git_config_bool(var, value);
639 if (is_bare_repository_cfg == 1)
640 inside_work_tree = -1;
641 } else if (strcmp(var, "core.worktree") == 0) {
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642 if (!value)
643 return config_error_nonbool(var);
8e0f7003 644 free(git_work_tree_cfg);
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645 git_work_tree_cfg = xstrdup(value);
646 inside_work_tree = -1;
647 }
299726d5 648 return 0;
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649}
650
651int check_repository_format(void)
652{
337e51ce 653 return check_repository_format_gently(get_git_dir(), NULL);
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654}
655
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656/*
657 * Returns the "prefix", a path to the current working directory
658 * relative to the work tree root, or NULL, if the current working
659 * directory is not a strict subdirectory of the work tree root. The
660 * prefix always ends with a '/' character.
661 */
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662const char *setup_git_directory(void)
663{
b3f66fd3 664 return setup_git_directory_gently(NULL);
5e7bfe25 665}